Hello @PeterN6 sorry mein deutch ist sehr slecht, so I will try with english I have same problem. Mine WiFi HDD is a MD 87890 MSN 5004 7024 and the Li-Ion battery has swollen so much that it broke the cabinet open. I wrote to MEDION/DK and got the answer, that spare parts is not available. I found another Li-Ion battery with same specs (3.7V 3000mAh) but the PCM (PowerControlModule) was not the same. I tried to take the PCM from the original battery and soldered it to the new Li-Ion - but something must have 'broken' There is no power at the output. Did you manage to get a new battery? Regards KMK/Denmark
... View more